提出AVM模型,让神经响应建模在不同刺激和个体间保持结构一致性。
AVM: Towards Structure-Preserving Neural Response Modeling in the Visual Cortex Across Stimuli and Individuals
- 用模块化路径实现条件感知适应,核心编码器保持冻结不变
- 跨数据集适应下解释方差提升9.1%,预测相关性比SOTA高2%
- 适合需要稳定建模的神经科学与生物启发式AI研究者
尽管深度学习模型在模拟神经响应方面表现优异,但往往难以清晰区分稳定的视觉编码与特定条件下的适应性变化,限制了其在不同刺激和个体间的泛化能力。我们提出自适应视觉模型(AVM),一种结构保持型框架,通过模块化子网络实现条件感知适应,而无需修改核心表示。AVM保持基于视觉变压器的编码器冻结,以捕捉一致的视觉特征,同时独立训练的调制路径负责处理由刺激内容和受试者身份引起的神经响应差异。我们在三个实验场景中评估AVM,包括刺激层面变化、跨受试者泛化以及跨数据集适应,均涉及输入与个体的结构化变化。在两个大规模小鼠初级视皮层(V1)数据集上,AVM相比最先进的V1T模型在预测相关性上提升约2%,展现出鲁棒泛化能力、可解释的条件特异性调制及高架构效率。具体而言,在跨数据集适应设置下,其解释方差(FEVE)提升9.1%。结果表明,AVM为跨生物与实验条件的自适应神经建模提供了统一框架,是在结构约束下的可扩展解决方案。其设计可能为未来神经科学与生物启发式人工智能系统中的皮层建模提供参考。
原文摘要 · Abstract (English)
While deep learning models have shown strong performance in simulating neural responses, they often fail to clearly separate stable visual encoding from condition-specific adaptation, which limits their ability to generalize across stimuli and individuals. We introduce the Adaptive Visual Model (AVM), a structure-preserving framework that enables condition-aware adaptation through modular subnetworks, without modifying the core representation. AVM keeps a Vision Transformer-based encoder frozen to capture consistent visual features, while independently trained modulation paths account for neural response variations driven by stimulus content and subject identity. We evaluate AVM in three experimental settings, including stimulus-level variation, cross-subject generalization, and cross-dataset adaptation, all of which involve structured changes in inputs and individuals. Across two large-scale mouse V1 datasets, AVM outperforms the state-of-the-art V1T model by approximately 2% in predictive correlation, demonstrating robust generalization, interpretable condition-wise modulation, and high architectural efficiency. Specifically, AVM achieves a 9.1% improvement in explained variance (FEVE) under the cross-dataset adaptation setting. These results suggest that AVM provides a unified framework for adaptive neural modeling across biological and experimental conditions, offering a scalable solution under structural constraints. Its design may inform future approaches to cortical modeling in both neuroscience and biologically inspired AI systems.
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